Extra wide 3" band for better grip and reduced fastener damage. Fits sizes 4-3/4", 5-1/2" (135 to 150mm). For use with larger hard to remove oil filters. For use with a 1/2 inch square drive tools. Designed for the high torque requirements of truck filters Heavy duty oil filter wrench with wide band fits sizes 4-3/4", 5-1/2" (135 to 150mm).